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Jurnal Solum
Published by Universitas Andalas
ISSN : 18297994     EISSN : 02560835     DOI : https://doi.org/10.2057/jsolum
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Focuses and scopes of Jurnal Solum is to publishes all aspects in the original research of soil science or review covering: Soil physic and soil conservation, Soil mineralogy, Soil chemistry and soil fertility, Soil biology and soil biochemical, Soil genesis and classification, Land survey and land evaluation, Land development and management environmental.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Tanah
Articles 6 Documents
 1 
Search results for , issue "Vol 20, No 1 (2023)" : 6 Documents clear
Penentuan Kesehatan DAS Welang Sesuai Nilai Daya Dukung DAS Berdasarkan Kriteria Lahan Prameswari, Anindya Hayu; Maroeto, Maroeto; Purwadi, Purwadi
Jurnal Solum Vol 20, No 1 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.1.1-10.2023

Abstract

The availability of land is dwindling along with the high population growth rate in each part of the Welang watershed, which has resulted in the health of the Welang watershed declining. Assessment of the health of the Welang watershed based on land criteria is expected to be able to determine the ability of the Welang watershed to provide for the needs of the community around the watershed. This study aims to determine the management and the condition of the carrying capacity of the watershed in terms of land criteria. Determination of watershed health was done by assessing the value of watershed carrying capacity according to the Regulation of the Minister of Forestry of the Republic of Indonesia Number: P.61/Menhut-II/2014 concerning Monitoring and Evaluation of Watershed Management. The carrying capacity value is reviewed based on land criteria, including: a) the percentage of critical land (PCL) through the calculation of critical land area, b) the percentage of vegetation cover (PVV) through the calculation of permanent vegetation area and c) the erosion index (EI) using the USLE approach. The Welang watershed is divided into upstream, middle and downstream areas of Bromo and Arjuno,. The results show that the carrying capacity of each part of the watershed is poor to moderate. The Arjuno upstream with the highest value of 50 is classified as bad class according to the percentage of PCL of 38.44%, PVV 66.92% and IE 1.88 tons/ha/year. Upstream Bromo has a value of 47.5 which is classified as poor class according to the PCL value of 28.10%, PVV 38.44% and EI 0.15 tons/ha/year. The downstream watershed has a value of 40, which is classified as medium class according to the percentage of critical land value of 0%, PVV 2.07% and EI 0.74 tons/ha/year and middle class has the lowest value 37.5 which is classified as medium class according to the PCL value of 6.44%, PVV 15.87% and EI 0.74 tons/ha/year. Based on the high PCL values in the upstream and middle areas which are classified as high, it can be concluded that the carrying capacity value of Arjuno and Bromo watershed is classified into the poor class as a result of the PCL values in the upstream and middle areas which are classified as high.Keywords: Carrying capacity, Erosion Index, Watershed
Pendugaan Erosi di Wilayah Tengah DAS Welang Kabupaten Pasuruan Faradiba, Nadya; Purwadi, Purwadi; Maroeto, Maroeto
Jurnal Solum Vol 20, No 1 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.1.11-19.2023

Abstract

DAS Welang dengan luasan 522.89 hektar melewati wilayah administrasi Kabupaten Malang, Kabupaten Pasuruan dan Kota Pasuruan. Sejak terjadinya banjir pada tahun 2013 akibat meluapnya sungai Welang bagian hulu, DAS Welang dimasukkan ke dalam DAS kritis dan prioritas . Faktor penyebab banjir ialah meningkatnya penduduk di area bantaran sungai Welang dan eksploitasi sumber daya alam seperti pembalakan hutan yang berakibat tanah rentan terhadap erosi dan longsor sehingga berdampak pada bagian hilir. Pendugaan besarnya nilai erosi dibutuhkan dalam upaya menekan luasan tanah ter erosi.. Beberapa langkah yang dapat dilakukan adalah pendugaan erosi dengan menggunakan model perhitungan Universal Soil Loss Equation (USLE). Penelitian ini dilakukan di 5 satuan penggunan lahan yaitu sawah irigasi, tegalan, hutan, sawah tadah hujan, dan kebun campuran. Tujuan dari penelitian ini untuk mengetahui pengaruh penggunaan lahan pada wilayah tengah DAS Welang. Hasil penelitian menunjukkan bahwa nilai pendugaan erosi di daerah wilayah tengah DAS Welang memiliki nilai terkecil sebesar 0.03 ton/ha/thn pada penggunaan lahan tegalan Purwodadi dan nilai terbesar sebesar 41.97 ton/ha/thn pada penggunaan lahan Kebun Campuran Purwosari. Nilai TBE dominan sangat ringan dan ringan dengan Indeks Erosi rendah.Key words : Erosi, USLE, DAS, DAS Welang
Sifat Fisik Tanah Pada Lahan Bawang Merah Di Kecamatan Gondang Nganjuk dan Kecamatan Kedungadem Bojonegoro Nugroho, Muhammad Vedo Prasetyo; Arifin, Moch.; Widjajani, Bakti Wisnu
Jurnal Solum Vol 20, No 1 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.1.20-28.2023

Abstract

Soil physical properties are those soil properties that affect plant growth and production, determining root penetration into the soil, soil water-holding capacity, drainage, soil aeration, and soil nutrient availability. Shallots prefer fertile soil, loose, and rich in organic matter. Loose and fertile soil produces large tubers. This research was conducted to determine and study the physical properties of the soil on shallots in Kecamatan Gondang, Nganjuk and Kecamatan Kedungadem, Bojonegoro. Undisturbed and disturbed soil samples were taken at depths of 0-20 cm and 20-40 cm. Determination of the sampling point using the Purposive Random Sampling method based on the type of soil and land use as well as surveying the location of observations. The selected soil types are Vertisols and Inceptisols. Each soil type is represented by 3 sampling points. The results showed that the physical properties of the various shallot fields studied had a soil texture dominated by clay and silt with a silty clay texture class, moderate bulk density, good soil porosity, soil permeability has various classifications from slow to fast, very stable. aggregate stability, and has low C-Organic material. Several parameters of the physical properties of the soil are suitable for growing shallots. However, the C-Organic content is still in the low category and it cannot meet the need for organic matter for shallot cultivation.Key words : soil physical, shallot, Vertisols, Inceptisols
Status Kerusakan Tanah Pada Berbagai Penggunaan Lahan Di DAS Welang Wilayah Tengah Kabupaten Pasuruan Nailussa'adah, Fina; Maroeto, Maroeto; Purwadi, Purwadi
Jurnal Solum Vol 20, No 1 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.1.29-38.2023

Abstract

Welang watershed is a watershed located in Pasuruan Regency. Welang watershed has 522.89 km2. Changes that occur in the soil due to uncontrolled use can reduce soil productivity and reduce the main function of the soil. The factor causing soil damage is the increase in population in an area that is not following its function. The measurement of the standard criteria for soil damage refers to the Regulation of the Minister of the Environment No. 07 of 2006. This study aims to assess the status of land use against soil damage. The results showed that the Welang watershed in the central region of Pasuruan Regency had a damaged status, namely lightly damaged (R.I). Redox as a limiting factor in each different land use, namely irrigated rice fields, rainfed rice fields, mixed gardens, dry fields, and forests) in Purwosari and Purwodadi sub-districts. Efforts were made to improve the damage status with redox limiting factors with the addition of organics. The addition of materials is carried out by periodic fertilization for physical, chemical, and biological improvement of the soil.Key words: Damage, Welang Watershed, Land
Karakteristik Sifat Fisik Tanah Wilayah Hulu Daerah Aliran Sungai (DAS) Rejoso Kabupaten Pasuruan Putri, Peggy Rahmawati; Purwadi, Purwadi; Priyadarshini, Rossyda
Jurnal Solum Vol 20, No 1 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.1.39-45.2023

Abstract

Watershed Characteristics (DAS) are a specific description of watersheds characterized by topography, soil type, geology, vegetation, and land use. Physical characteristics can be the primary reference in planning, implementing, and evaluating appropriate watershed management. The research was carried out from January to August 2022 in the upstream Rejoso watershed (DAS) area, consisting of Tosari and Puspo Subdistricts, Pasuruan Regency, East Java. This study aims to obtain information about physical characteristics in the upstream region of the Rejoso watershed. This study uses a survey method of five land uses in this region. Five land uses namely, potato horticultural gardens with an altitude of 1,850-2,500 masl, horticultural gardens (potato, leek, and cabbage) of 1,350-1,850 masl, and forest land use of 800-1,350 masl are found in this area. Three sampling points were determined for each land use. The results showed that the physical characteristics of the soil in the upstream Rejoso watershed varied greatly with the slope. At the study site was classified as very steep, with soil density from low to medium, soil texture dominated by sand and dust fractions with dusty clay texture class, and permeability classified as slow to medium, moderate, and low to high organic matter content.Keywords: Soil physics, upstream watershed Rejoso
Penilaian Status Kesuburan Tanah Pada Kawasan Hutan di Kecamatan Wonosalam Kabupaten Jombang Assabil, Fadli Fikri; Santoso, Setyo Budi; Siswanto, Siswanto
Jurnal Solum Vol 20, No 1 (2023)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.20.1.46-53.2023

Abstract

Wonosalam is one of the sub-districts in Jombang Regency. Various forms of land use exist in Wonosalam Subdistrict, one of which is forest area, Forest is a valuable natural resource, because it provides great benefits for human welfare. The aim of the study was to assess the fertility status and management reference on several forest land uses in Wonosalam sub-district. The study used a land survey method, soil samples were taken purposively (purposive sampling) at depths of 0-20 and 20-40 obtained 4 composite sampling points. Soil chemistry table was used to determine the value and criteria of soil chemistry. Stages of research with soil analysis using five soil fertility parameters (CEC, base saturation, C-organic, P-available and K-available), which are used to assess the state of soil fertility. The results showed that fertility was low at all sampling points due to limiting factors of C-organic concentration and alkali saturation.Keywords: fertility, forest, soil, wonosalam

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